A surge can be defined as a(n):

A.
Momentary power loss

B.
Steady interfering disturbance

C.
Prolonged high voltage

D.
Initial surge of power at start

Explanation:
The correct answer is “Prolonged high voltage”.
Answer “initial surge of power at start” or power on, is called an inrush.
Momentary power loss is a fault.
A steady interfering disturbance, is called noise.